Compare mosfet with jfet, Electrical Engineering

Assignment Help:

Q. Compare MOSFET with  JFET?

a. In enhancement and depletion types of MOSFET,the transverse electric field induced across an insulating layer deposited on the semiconductor material controls the conductivity of the channel.In the JFET the transverse electric field across the reverse biased PN junction controls the conductivity of the channel.

b. The gate leakage current in a MOSFET is of the order of 10-12 A. Hence the input resistance of  a MOSFET is very high in the order of 1010  to 1015 W.The gate leakage current of a JFET is of the order of 10-9 A and its input resistance is of the order of 108 W.

c. The output characteristics of the JFET are flatter than those of the MOSFET and hence , the drain resistance of a JFET (0.1 to 1MW)is much higher than that of MOSFET(1 to 50 kW).

d. JFETs are operated only in the depletion mode.The depletion type MOSFET may be operated in both depletion and enhancement mode.

e. Comparing to JFET , MOSFETs are eaiser to fabricate.

f. MOSFET is very susceptible to overload voltage and needs special handling during installation.It gets damaged easily if it is not properly handled.

g. MOSFET has zeo offset voltage. As it is a symmetrical device, the source and drain can be interchanged.These two properties are very useful in analog signal switching.


Related Discussions:- Compare mosfet with jfet

Slack running fit, Illustrate the conventional representations of the follo...

Illustrate the conventional representations of the following guide to the selection of Fits: (i) Slack Running Fit (ii) Loose Running Fit (iii) Easy Running Fit (iv) No

Fixed capacitor, what is the contruction of a fixed capacitor

what is the contruction of a fixed capacitor

Define spectrum of real signals, Define Spectrum of Real Signals? In th...

Define Spectrum of Real Signals? In the real world, we rarely come throughout a pure sine wave. Typical signals have a wide spectrum as displayed in the above diagram. Informat

Electrical/electronic engineering project, i need a project creating in ele...

i need a project creating in electronic/electrical engineering at HNC level, 3000 words Harvard referencing. it can be about anything in this field or i can give a suggestion

Explain thevenin''s theorem procedure, Thevenin's theorem procedure:   1. ...

Thevenin's theorem procedure:   1.  Open circuit R L and find Thevenin's voltage (V TH ). 2.  Find Thevenin's resistance (R TH ) when voltage source is short circuit or curren

Define resistance strain gauge, Q. Define Resistance Strain Gauge? Mech...

Q. Define Resistance Strain Gauge? Mechanical and civil engineers routinely employ the dependence of resistance on the physical dimensions of a conductor to measure strain. A s

Show the amenability to computer processing, Q. Show the Amenability to com...

Q. Show the Amenability to computer processing? Due to the digital data collected and stored in the form of a matrix, the same becomes amenable to processing on computers. By f

Solution manual, Ask question #Minimum 100 words accespted#i want solution ...

Ask question #Minimum 100 words accespted#i want solution manual of electronic instrumentation and measurements

Explain bimetals, Explain Bimetals. Bimetals : It is made of two metal...

Explain Bimetals. Bimetals : It is made of two metallic strips of not like metal alloys with various coefficients of thermal expansion. At a specific temperature the strip wil

Digital electronics, Design a recycling MOD 19 up counter using JK FFs. In ...

Design a recycling MOD 19 up counter using JK FFs. In your design, include the logic circuit diagram and the timing diagram output that counts from 000002 = 010 to 100112 = 1910. C

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd